Transmitter and receiver for wireless high speed data transmission

Abstract

An apparatus and method for wireless high speed data transmission in a communication system are described. In one embodiment, the apparatus comprises multiple radio-frequency (RF) signal generators to generate multiple RF signals and a switch having inputs coupled to receive the RF signals and to receive data from a data source. The switch has an output that outputs one of RF signals based on the data.

1 . An apparatus for use in a communication system, the apparatus comprising:
 a plurality of radio-frequency (RF) signal generators to generate a plurality of RF signals; and   a switch having a first plurality of inputs coupled to receive the plurality of RF signals and another input coupled to receive data from a data source, the switch having an output that outputs one of the plurality of RF signals based on the data.   
   
   
       2 . The apparatus defined in  claim 1  wherein the plurality of RF signal generators comprises a plurality of oscillators. 
   
   
       3 . The apparatus defined in  claim 2  wherein one or more of the plurality of oscillators comprises a voltage controlled oscillator. 
   
   
       4 . The apparatus defined in  claim 1  wherein the plurality RF signal generators comprise:
 a first RF signal generator having an output of a first RF signal that is coupled to a first input of the switch; and   circuitry coupled to receive the first RF signal and generate a second RF signal from the first RF signal, the second RF signal being different than the first RF signal and being coupled to a second input of the switch.   
   
   
       5 . The apparatus defined in  claim 4  wherein the first RF signal generator comprises an oscillator. 
   
   
       6 . The apparatus defined in  claim 1  wherein the plurality of RF signals comprises signals having one or more of a group consisting of: different frequencies, different amplitudes, and different phases. 
   
   
       7 . The apparatus defined in  claim 1  wherein the output of the switch is a phase modulated signal. 
   
   
       8 . The apparatus defined in  claim 1  wherein the switch comprises a series of transistors with impedance loads. 
   
   
       9 . The apparatus defined in  claim 1  wherein the switch comprises one or more integrated circuit devices. 
   
   
       10 . The apparatus defined in  claim 1  further comprising a digital phase receiver to perform digital phase transceiver modulation. 
   
   
       11 . The apparatus defined in  claim 1  further comprising an antenna coupled to the switch to wirelessly transmit the RF signal output from the switch. 
   
   
       12 . The apparatus defined in  claim 11  further comprising a power amplifier coupled to the output of the switch and the antenna to amplify the RF signal output from the switch prior to wireless transmission by the antenna. 
   
   
       13 . The apparatus defined in  claim 12  wherein the switch and the power amplifier are part of a single integrated circuit. 
   
   
       14 . The apparatus defined in  claim 11  further comprising a bandpass filter coupled to the antenna to filter the RF signal output prior to wireless transmission by the antenna. 
   
   
       15 . The apparatus defined in  claim 1  wherein the RF signal comprises a microwave signal. 
   
   
       16 . The apparatus defined in  claim 1  wherein the data comprises voice information. 
   
   
       17 . The apparatus defined in  claim 1  further comprising an amplitude modulation unit coupled to the output of the switch to perform amplitude modulation on each RF signal being output from the switch to increase in number data bits being transmitted. 
   
   
       18 . An apparatus for use in a communication system, the apparatus comprising:
 a signal generator to generate a plurality of radio-frequency (RF) signals; and   an output device coupled to the signal generator to output one of one of the plurality of RF signals based on the data from a data source; and   an antenna to wirelessly transmit radio waves corresponding to each one of the plurality of RF signals output from the output device.   
   
   
       19 . An apparatus comprising:
 a voltage measurement unit coupled to the input to measure voltages of samples of the phase modulated signal taken at predetermined intervals for each data cycle;   a voltage comparator coupled to the voltage measurement unit to compare measured voltages output from the voltage measurement unit for each data cycle; and   a data processor coupled to the voltage comparator to determine bits to be output in response to the phase modulated signal by
 determining a voltage bias level and a first set of samples corresponding to the voltage bias level, 
 evaluating results of comparisons of the voltage levels of a second set of samples to the voltage bias level and the time the second set of samples were taken relative to samples of the first set of samples to determine a numerical value associated with each data cycle. 
   
   
   
       20 . The apparatus defined in  claim 19  wherein the voltage comparator compares a first number of odd number voltage samples to an even number of voltage samples, and further wherein the data processor determines bits to be output based on the results of comparing the first number of odd number voltage samples to the even number of voltage samples. 
   
   
       21 . The apparatus defined in  claim 19  wherein the phase modulated signal is generated by a transmitter comprising:
 a plurality of radio-frequency (RF) signal generators to generate a plurality of RF signals; and   a switch having a first plurality of inputs coupled to receive the plurality of RF signals and another input coupled to receive data from a data source, the switch having an output that outputs one of the plurality of RF signals based on the data, wherein the output is the phase modulated signal.   
   
   
       22 . The apparatus defined in  claim 19  wherein voltages measured by the voltage measurement unit are bias voltages. 
   
   
       23 . The apparatus defined in  claim 19  wherein the voltage measurement unit comprises one of a group consisting of: a correlator, a match filter, and a microcontroller. 
   
   
       24 . The apparatus defined in  claim 19  further comprising a memory to store voltages measured by the voltage measurement unit, the voltage comparator coupled to the memory to access stored voltage measurements for comparison. 
   
   
       25 . The apparatus defined in  claim 19  further comprising:
 a transmitter having   a plurality of radio-frequency (RF) signal generators to generate a plurality of RF signals; and
 a switch having a first plurality of inputs coupled to receive the plurality of RF signals and another input coupled to receive data from a data source, the switch having an output that outputs one of the plurality of RF signals based on the data. 
   
   
   
       26 . The apparatus defined in  claim 19  further comprising an antenna coupled to the voltage measurement unit. 
   
   
       27 . The apparatus defined in  claim 19  further comprising an RF amplifier coupled to the antenna and the voltage measurement unit to amplify an RF signal received by the antenna. 
   
   
       28 . The apparatus defined in  claim 27  further comprising a control unit coupled to the RF amplifier to place the RF amplifier in a reduced power consumption state at transition times in the phase modulated signal when transitioning between each data bit. 
   
   
       29 . The apparatus defined in  claim 22  further comprising a bandpass filter coupled to the RF amplifier and the antenna to filter the RF signal received by the antenna prior to amplification by the RF amplifier. 
   
   
       30 . The apparatus defined in  claim 23  further comprising a frequency filter coupled to the RF amplifier and the voltage measurement unit to filter the amplified RF signal output from the RF amplifier and provide the filtered, amplified RF signal to the voltage measurement unit. 
   
   
       31 . The apparatus defined in  claim 19  further comprising a control unit coupled to one or more of the voltage measurement unit, the voltage comparator and the data processor to prevent processing of samples of the phase modulated signal at transition times in the phase modulated signal when transitioning between each data bit. 
   
   
       32 . A mobile device comprising:
 an antenna;   an RF unit coupled to the antenna, the RF unit having
 a multi-oscillator transmitter coupled to the antenna, and 
 a digital phase receiver coupled to the antenna; 
   a signal processing unit coupled to the RF unit; and   a control unit coupled to the RF unit and the signal processing unit to control operation of the RF unit and the signal processing unit.   
   
   
       33 . An apparatus for use in a communication system, the apparatus comprising:
 an oscillator to output an RF signal having a period, the oscillator being responsive to data from a data source to change the RF signal within a fraction of the period, such that the oscillator is capable of generating a plurality of RF signals; and   an antenna coupled to the oscillator to wirelessly transmit radio waves corresponding to each one of the plurality of RF signals output from the oscillator.